SEGMENT REPORTING (Details) - USD ($) $ in Thousands	12 Months Ended			24 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenue:	$ 1,430,061	$ 1,315,077	$ 1,071,840
Cost of Operations	1,264,346	1,135,876	970,072
Depreciation and Amortization	115,877	96,694	86,795
Loss on Disposal of Equipment	2,529	8,319	1,200
Severance	946	744	4,353
Income from Operations	46,363	73,444	9,420
C O V I D19 Pandemic
Segment Reporting Information [Line Items]
Proceeds from provider relief funding	0	9,100	26,300	$ 35,400
Imaging Centers
Segment Reporting Information [Line Items]
Revenue:	1,425,665	1,313,662	1,071,840
Cost of Operations	1,240,593	1,130,543	967,250
Depreciation and Amortization	109,524	96,174	86,396
Loss on Disposal of Equipment	2,506	8,319	1,200
Severance	926	744	4,353
Income from Operations	72,116	77,882	12,641
AI
Segment Reporting Information [Line Items]
Revenue:	4,396	1,415	0
Cost of Operations	23,753	5,333	2,822
Depreciation and Amortization	6,353	520	399
Loss on Disposal of Equipment	23	0	0
Severance	20	0	0
Income from Operations	$ (25,753)	$ (4,438)	$ (3,221)